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Cleveland Guardians ace Shane Bieber will have season-ending Tommy John elbow surgery, a major blow to the team and the 2020 Cy Young winner.

Bieber, who missed several months last season with elbow issues, experienced pain following an opening-day start in Oakland and again this week against Seattle. The righthander underwent imaging tests, and reconstructive surgery on his ulnar collateral ligament was recommended by several doctors.

The recovery time can take up to 16 months following the surgery.

■ Spencer Strider, Atlanta’s ace and the major league leader in wins and strikeouts last season, will have tests on his right elbow Saturday after complaining about discomfort in Friday night’s game.

Strider lasted only four innings, allowing five runs on seven hits. He recorded four strikeouts and struggled with control, walking three batters in Atlanta’s 6-5 win over Arizona in 10 innings.

■ Julio Teheran and the New York Mets finalized a $2.5 million, one-year contract, filling an immediate need in the team’s injurydepleted rotation.

A longtime Mets nemesis with the rival Braves, the veteran right-hander is scheduled to start Monday night against his former club in the opener of a four-game series at Atlanta.

■ Mets newcomer J.D. Martinez played his first minor league game since signing a $12 million, oneyear contract late in spring training. Martinez was the designated hitter Friday night for Class A St. Lucie against Daytona and went 0 for 4 with a walk as he gets ready to join the big league club.

■ The Seattle Mariners have finalized a minor league deal with 2015 AL Cy Young Award winner Dallas Keuchel.

Seattle assigned the veteran left-hander to Triplea Tacoma. Keuchel, 36, is a two-time All-star who has struggled in recent seasons. He pitched for the Minnesota Twins last season and went 2-1 with a 5.97 ERA in 10 appearances, including six starts.